content: /*
   * Copyright (C) 2015 Square, Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.lighters.demos.token.http.converter;
  
  import com.google.gson.Gson;
  import com.google.gson.TypeAdapter;
  import com.google.gson.reflect.TypeToken;
  import com.lighters.demos.token.http.api.ApiModel;
  import java.lang.annotation.Annotation;
  import java.lang.reflect.ParameterizedType;
  import java.lang.reflect.Type;
  import okhttp3.RequestBody;
  import okhttp3.ResponseBody;
  import retrofit2.Converter;
  import retrofit2.Retrofit;
  
  /**
   * A {@linkplain Converter.Factory converter} which uses Gson for JSON.
   * <p>
   * Because Gson is so flexible in the types it supports, this converter assumes that it can handle
   * all types. If you are mixing JSON serialization with something else (such as protocol buffers),
   * you must {@linkplain Retrofit.Builder#addConverterFactory(Converter.Factory) add this instance}
   * last to allow the other converters a chance to see their types.
   */
  public final class GsonConverterFactory extends Converter.Factory {
      /**
       * Create an instance using a default {@link Gson} instance for conversion. Encoding to JSON and
       * decoding from JSON (when no charset is specified by a header) will use UTF-8.
       */
      public static GsonConverterFactory create() {
          return create(new Gson());
      }
  
      /**
       * Create an instance using {@code gson} for conversion. Encoding to JSON and
       * decoding from JSON (when no charset is specified by a header) will use UTF-8.
       */
      public static GsonConverterFactory create(Gson gson) {
          return new GsonConverterFactory(gson);
      }
  
      private final Gson gson;
  
      private GsonConverterFactory(Gson gson) {
          if (gson == null) throw new NullPointerException("gson == null");
          this.gson = gson;
      }
  
      @Override
      public Converter<ResponseBody, ?> responseBodyConverter(final Type type, Annotation[] annotations, Retrofit retrofit) {
          Type newType = new ParameterizedType() {
              @Override
              public Type[] getActualTypeArguments() {
                  return new Type[] { type };
              }
  
              @Override
              public Type getOwnerType() {
                  return null;
              }
  
              @Override
              public Type getRawType() {
                  return ApiModel.class;
              }
          };
          TypeAdapter<?> adapter = gson.getAdapter(TypeToken.get(newType));
          return new GsonResponseBodyConverter<>(adapter);
      }
  
      @Override
      public Converter<?, RequestBody> requestBodyConverter(Type type, Annotation[] parameterAnnotations,
          Annotation[] methodAnnotations, Retrofit retrofit) {
          TypeAdapter<?> adapter = gson.getAdapter(TypeToken.get(type));
          return new GsonRequestBodyConverter<>(gson, adapter);
      }
  }
  